EP0813204A2
Expired / Lapsed
EP
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Single in-line memory module
Assignee: Sun Microsystems Inc
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Filing: 1993-04-28
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Granted: —
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Expires: 2013-04-28
Abstract
Abstract A single in-line memory module comprising: a printed circuit card having a first and a second face and including connector means for coupling said printed circuit card to a circuit element; a plurality of memory devices disposed on said first and second faces, said memory devices arranged in first, second and third configurations; said first configuration comprising at least two memory elements disposed in a back to back position on said first and second faces and electrically coupled to one another; said second configuration comprising at least two of said first configurations coupled to one another in a side by side arrangement; said third configuration comprising at least two of said second configurations coupled together.
Inventors
- 👤 Andreas Bechtolsheim
- 👤 James Testa
- 👤 Edward Frank
- 👤 Shawn Storm
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 11:48
CPC Classifications
G; G11; G11C; G11C5/00; G11C5/02; G11C5/04; H; H05; H05K; H05K1/00; H05K1/02; H05K1/11; H05K1/117; H05K1/14; H05K1/141; H05K1/18; H05K1/181; H05K2201/00; H05K2201/09; H05K2201/09209; H05K2201/095; H05K2201/09645; H05K2201/10; H05K2201/10613; H05K2201/10621; H05K2201/10689; H05K2203/00; H05K2203/15; H05K2203/1572; H05K3/00; H05K3/40; H05K3/403; Y; Y10; Y10S; Y10S439/00; Y10S439/951
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
110 words
A single in-line memory module (5) comprising: a printed circuit board having a first side and a second side, a plurality of memory elements (10) arranged on said printed circuit board, said printed circuit board having an electrical connector (30), said electrical connector (30) comprising a first set of electrical contacts on said first side of said printed circuit board and a second set of electrical contacts on said second side of said printed circuit board, characterized in that said electrical connector has symmetrical power and ground contacts for preventing damage to said single in-line memory module if said single in-line memory module is inserted into said computer system backwards.
Claim 2
Dependent Claim
26 words
The memory module (5) as claimed in claim 1, wherein said first set of electrical contacts and said second set of electrical contacts are electrically distinct.
Claim 3
Dependent Claim
44 words
The memory module (5) as claimed in claim 1 or 2, further comprising a driver circuit (15) coupled to a set of control signals in said electrical connector (30), said driver circuit (15) transmitting said control signals to said plurality of memory elements (10).
Claim 4
Dependent Claim
27 words
The memory module (5) as claimed in claim 3, wherein said driver circuit (15) is mounted substantially centered on said first side of said printed circuit board.
Claim 5
Dependent Claim
41 words
The memory module (5) as claimed in one of claims 1 to 4, wherein said plurality of memory elements (10) is arranged on both said first side of said printed circuit board and said second side of said printed circuit board.
Claim 6
Dependent Claim
72 words
The memory module (5) as claimed in one of claims 3 to 5, wherein said plurality of memory elements (10) comprises a first set of memory elements (10) arranged on said first side of said printed circuit board to the left of said driver circuit (15) and a second set of memory elements (10) arranged on said first side of said printed circuit board to the right of said driver circuit (15).
Claim 7
Dependent Claim
65 words
The memory module (5) as claimed in claim 6, wherein said first and second sets of memory elements (10) each comprise nine memory elements (10) arranged in a three by three matrix and said driver circuit (15) transmits said control signals directly to a center memory element (10) in said first and said second sets of memory elements (10) such that signal skew is minimized.
Claim 8
Dependent Claim
72 words
The memory module (5) as claimed in claim 6 or claim 7, wherein said plurality of memory elements (10) further comprises a third set of memory elements (10) arranged on said second side of said printed circuit board opposite said first set of memory elements (10) and a fourth set of memory elements (10) arranged on said second side of said printed circuit board opposite said second set of memory elements (10).
Claim 9
Dependent Claim
44 words
The memory module (5) as claimed in one of claims 3 to 8, wherein said control signals comprise column address strobe (CAS), row address strobe (RAS), write enable (WE) and output enable (OE) signals, and/or wherein said driver circuit (15) further drives address lines.
Claim 10
Dependent Claim
34 words
The memory module (5) as claimed in one of claims 1 to 9, wherein said electrical connector (30) comprises a data path, and wherein said data path includes a plurality of error correction lines.
Claim 11
Dependent Claim
37 words
The memory module (5) as claimed in one of claims 1 to 10, wherein said electrical connector (30) includes a full width data path configured to connect to a computer system memory bus having n data lines.
Claim 12
Dependent Claim
60 words
A memory structure for a computer system comprising an integrated video and data memory bus and at least one single in-line memory module (5), said plurality of memory elements (10) being configured for integrated data and video storage, wherein said at least one single in-line memory module (5) further comprises the features recited in one of claims 1 to 11.
References Cited (Backward Citations)
EP0382948A1
Cited
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